The weight of the horn only says something about the weight. It is possible to build a light bright or dark horn, a light symphonic model, a light lead trumpet with lots of sizzle as well as just about any other combination.

I played a Bach 72* lightweight horn in music school and for the first 20 or so years of my career. I used in a symphonic wind band, symphony orchestra and as lead in a jazz band.

The only way to develop a valid opinion about a horn is to play it. After spending quality time with many different instruments, we develop a feel for the differences. That is the point where we can start to make decisions about what could be best for us.